# Question: An exam produced grades with a mean score of 74 2

An exam produced grades with a mean score of 74.2 and a standard deviation of 11.5. Find the z-score for each test score x:

a. x = 54

b. x = 68

c. x = 79

d. x = 93

a. x = 54

b. x = 68

c. x = 79

d. x = 93

## Answer to relevant Questions

A nationally administered test has a mean of 500 and a standard deviation of 100. If your standard score on this test was 1.8, what was your test score? Which x value has the higher position relative to the set of data from which it comes? A: x = 85, where mean = 72 and standard deviation = 8 B: x = 93, where mean = 87 and standard deviation = 5 Using the empirical rule, determine the approximate percentage of a normal distribution that is expected to fall within the interval described. a. Less than the mean b. Greater than 1 standard deviation above the mean c. ...One of the many things the U.S. Census Bureau reports to the public is the increase in population for various geographic areas within the country. The percents of increase in population for the 100 fastest-growing counties ...Did you know that 17.1% is more than double 15.6%? “Ridiculous!” you say. a. Explain how the graph suggests such a relationship. b. How could this misrepresentation be corrected? c. Redraw this graph to correctly show ...Post your question